LP2951ACSD is available for purchase but is not normally stocked.
Available Substitutes:

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LP2951ACSD/NOPB
Texas Instruments
In Stock: 1,410
Unit Price: $2.11000
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Linear Voltage Regulator IC Positive Adjustable (Fixed) 1 Output 100mA 8-WSON (4x4)
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Linear Voltage Regulator IC Positive Adjustable (Fixed) 1 Output 100mA 8-WSON (4x4)
What is a Voltage Regulator Another Teaching Moment | Digi-Key Electronics

LP2951ACSD

DigiKey Part Number
LP2951ACSDTR-ND - Tape & Reel (TR)
LP2951ACSDCT-ND - Cut Tape (CT)
LP2951ACSDDKR-ND - Digi-Reel®
Manufacturer
Texas Instruments
Manufacturer Product Number
LP2951ACSD
Description
IC REG LIN POS ADJ 100MA 8-WSON
Customer Reference
Detailed Description
Linear Voltage Regulator IC Positive Adjustable (Fixed) 1 Output 100mA 8-WSON (4x4)
Datasheet
 Datasheet
EDA/CAD Models
LP2951ACSD Models
Product Attributes
Type
Description
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Category
Mfr
Texas Instruments
Series
-
Packaging
Tape & Reel (TR)
Cut Tape (CT)
Digi-Reel®
Part Status
Not For New Designs
Output Configuration
Positive
Output Type
Adjustable (Fixed)
Number of Regulators
1
Voltage - Input (Max)
30V
Voltage - Output (Min/Fixed)
1.235V (5V)
Voltage - Output (Max)
29V
Voltage Dropout (Max)
0.6V @ 100mA
Current - Output
100mA
Current - Quiescent (Iq)
120 µA
Current - Supply (Max)
14 mA
PSRR
-
Control Features
Enable
Protection Features
Over Current, Over Temperature, Short Circuit
Operating Temperature
-40°C ~ 125°C (TJ)
Mounting Type
Surface Mount
Package / Case
8-WDFN Exposed Pad
Supplier Device Package
8-WSON (4x4)
Base Product Number
LP2951
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Available To Order
Not recommended for new design, minimums may apply View Substitutes or Alternative Package Types
Quantity
All prices are in AUD
Cut Tape (CT) & Digi-Reel®
QuantityUnit PriceExt Price
1$1.77000$1.77
* All Digi-Reel orders will add a $9.50 reeling fee.
Tape & Reel (TR)
QuantityUnit PriceExt Price
1,000$0.89420$894.20
2,000$0.86795$1,735.90
3,000$0.85480$2,564.40
5,000$0.84022$4,201.10
7,000$0.83171$5,821.97
10,000$0.82352$8,235.20
Manufacturers Standard Package
Unit Price without GST:$1.77000
Unit Price with GST:$1.94700